UPDATE: BPS Pro 13+ and BPS 2.0+ versions have a feature called: Setup Wizard AutoFix (AutoWhitelist|AutoSetup|AutoCleanup) that automatically creates plugin and theme whitelist rules and automatically sets up and cleans up caching plugins htaccess code.
http://wordpress.org/support/topic/conflict-with-social-share-plugin?replies=7#post-5718264
1. Copy the code below to this BPS Root Custom Code text box: CUSTOM CODE PLUGIN/THEME SKIP/BYPASS RULES
2. Click the Save Root Custom Code button.
3. Go to the BPS Security Modes page and click the Root Folder BulletProof Mode Activate button.
Note: If your WordPress installation is a subfolder installation then add your WordPress folder name in the path. Example: /My-WordPress-Folder-Name/wp-content/plugins/easy-social-share-buttons/
# Easy Social Share Buttons skip/bypass
RewriteCond %{REQUEST_URI} ^/wp-content/plugins/easy-social-share-buttons/ [NC]
RewriteRule . - [S=13]